createsocrrd.bat will create an rrd db called soc.rrd with one variable socpct
readsoc.ps1 needs to be modified to your GW address and will write the soc value to soc.rrd and after running the PS for a while …
graphit.bat will run rrdtool graph and (hopefully) create soc.png – a 4 hr graph of the soc value.

If this is your first time running PS scripts on your Windows machine you may have to modify the default execution policy – running Powershell ISE as an admin task and entering Set-ExecutionPolicy RemoteSigned should be sufficient but here Google is your friend.